char 类型的常数_CHAR_MAX常数，带C ++示例

char 类型的常数

C ++ CHAR_MAX宏常量 (C++ CHAR_MAX macro constant)

CHAR_MAX constant is a macro constant which is defied in climits header, it is used to get the maximum value of a char object, it returns the maximum value that a char object can store, which is either 127 (SCHAR_MAX) or 255 (UCHAR_MAX).

CHAR_MAX常量是在climits标头中定义的宏常量，用于获取char对象的最大值，它返回char对象可以存储的最大值，即127( SCHAR_MAX )或255( UCHAR_MAX ) 。

Note:

注意：

The actual value depends on the compiler architecture or library implementation.
实际值取决于编译器体系结构或库实现。
We can also use <limits.h> header file instead of <climits> header as CHAR_MAX constant is defined in both of the libraries.
我们也可以使用<limits.h>头文件而不是<climits>头文件，因为在两个库中都定义了CHAR_MAX常量 。

Syntax of CHAR_MAX constant:

CHAR_MAX常数的语法：

    CHAR_MAX

Example:

例：

    Constant call:
cout << CHAR_MAX;
Output:
127

C ++代码演示带有climits标头的CHAR_MAX常量示例 (C++ code to demonstrate example of CHAR_MAX constant with climits header)

// C++ code to demonstrate example of 
// CHAR_MAX constant with climits header
#include<iostream>
#include<climits>
using namespace std;
int main()
{
//prinitng the value of CHAR_MAX
cout<<"CHAR_MAX: "<<CHAR_MAX<<endl;
return 0;
}

Output

输出量

CHAR_MAX: 127

C ++代码演示带有limits.h头文件的CHAR_MAX常量示例 (C++ code to demonstrate example of CHAR_MAX constant with limits.h header file)

// C++ code to demonstrate example of 
// CHAR_MAX constant with <limits.h> header file
#include<iostream>
#include<limits.h>
using namespace std;
int main()
{
//prinitng the value of CHAR_MAX
cout<<"CHAR_MAX: "<<CHAR_MAX<<endl;
return 0;
}

Output

输出量